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A small, low power boost regulator optimized for energy harvesting applications

  • Zachary NoskerEmail author
  • Yasunori Kobori
  • Haruo Kobayashi
  • Kiichi Niitsu
  • Nobukazu Takai
  • Takeshi Oomori
  • Takahiro Odaguchi
  • Isao Nakanishi
  • Kenji Nemoto
  • Jun-ichi Matsuda
Article
  • 434 Downloads

Abstract

A small, low power bootstrapped boost regulator is introduced that can start up with an input voltage of 240 mV and achieve a maximum efficiency of 97 %. The proposed circuit uses two separate control schemes for startup and steady-state operation. A fixed-frequency oscillator is used to initially start up the circuit and raise the output voltage. Once the output voltage has reached a level adequate to bias the internal circuitry, a constant-on-time style hysteretic control scheme is used, which helps increase system efficiency compared to using a conventional pulse-width-modulated control scheme. While maintaining a high efficiency, the proposed circuit only requires three external components: two capacitors (input and output) and an inductor. The effectiveness of this approach is shown through Spectre simulation results.

Keywords

Energy harvesting Boost regulator CMOS Hysteretic control 

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Copyright information

© Springer Science+Business Media New York 2013

Authors and Affiliations

  • Zachary Nosker
    • 1
    Email author
  • Yasunori Kobori
    • 1
  • Haruo Kobayashi
    • 1
  • Kiichi Niitsu
    • 7
  • Nobukazu Takai
    • 1
  • Takeshi Oomori
    • 4
  • Takahiro Odaguchi
    • 5
  • Isao Nakanishi
    • 2
  • Kenji Nemoto
    • 6
  • Jun-ichi Matsuda
    • 3
  1. 1.Department of Electronic EngineeringGunma UniversityKiryuJapan
  2. 2.AKM Technology CorporationAsakaJapan
  3. 3.Asahi Kasei Power Devices CorporationNobeokaJapan
  4. 4.AKM Technology CorporationNaka-ku, NagoyaJapan
  5. 5.AKM Technology CorporationAoba-ku, SendaiJapan
  6. 6.Asahi Kasei Microdevices CorporationsAtsugiJapan
  7. 7.Department of Electrical Engineering and Computer ScienceNagoya UniversityNagoyaJapan

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